Home / 642,200.63-886,236.93-355,739.27

Finding the Fourth Proportional to 642,200.63, 886,236.93 and 355,739.27

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Solution

The fourth proportional to 642,200.63, 886,236.93 and 355,739.27 is: 490,920.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,200.63 : 886,236.93 = 355,739.27 : x
  2. Step 2: Convert to fraction form
    642,200.63/886,236.93 = 355,739.27/x
  3. Step 3: Cross multiply
    642,200.63x = 886,236.93 × 355,739.27
  4. Step 4: Simplify right side
    642,200.63x = 315,269,274,094.06
  5. Step 5: Solve for x
    x = 315,269,274,094.06/642,200.63
  6. Step 6: Final answer
    x = 490,920.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.